This book has been written for all passionate project practitioners. People who are driven by the need to create real impact and are willing to take untraditional measures to lead projects. Whether you are a PMO, project owner, project leader, team member or someone who invests time in temporary endeavours undertaken to create an impact – this book is for you. This is a practical handbook designed to change your way of thinking and acting in and with projects. It provides you with hands-on principles, methods and tools to help you realize projects with double the impact in half the time, as well as real- life cases to show what it all looks like in practice. A handbook designed to enable you to go out and do it yourself. Consultancy, universities, companies and more than 1,400 practitioners have co-created the ideas presented here in this book. Half Double is a methodology created through practice, with practice. It has already created proven impact in projects around the globe, delivering on the overall ambition of realizing projects in half the time with double the impact. In essence, the book extends the known agile methods with concrete methods for impact realization, reflective leadership and a strong focus on how people are motivated and perform — it’s all about placing an extreme focus on three core elements: • Impact – Stakeholder satisfaction is the ultimate success criterion. Flow – Intensity and frequent interaction in project work, learning and impact. • Leadership – Embrace uncertainty and make the project happen